EP0839259B1 - Tandem-schaufelgitter - Google Patents
Tandem-schaufelgitter Download PDFInfo
- Publication number
- EP0839259B1 EP0839259B1 EP96925721A EP96925721A EP0839259B1 EP 0839259 B1 EP0839259 B1 EP 0839259B1 EP 96925721 A EP96925721 A EP 96925721A EP 96925721 A EP96925721 A EP 96925721A EP 0839259 B1 EP0839259 B1 EP 0839259B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blade
- blades
- row
- blade ring
- cascade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000926 separation method Methods 0.000 claims 2
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/141—Shape, i.e. outer, aerodynamic form
- F01D5/142—Shape, i.e. outer, aerodynamic form of the blades of successive rotor or stator blade-rows
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/12—Blades
- F01D5/14—Form or construction
- F01D5/141—Shape, i.e. outer, aerodynamic form
- F01D5/146—Shape, i.e. outer, aerodynamic form of blades with tandem configuration, split blades or slotted blades
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2200/00—Mathematical features
- F05D2200/10—Basic functions
- F05D2200/11—Sum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/96—Preventing, counteracting or reducing vibration or noise
- F05D2260/961—Preventing, counteracting or reducing vibration or noise by mistuning rotor blades or stator vanes with irregular interblade spacing, airfoil shape
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
Definitions
- the invention relates to a tandem blade grid of a flow force or Working machine with at least two essentially in direct succession arranged rows of blades in the rotor or stator, the grid in the second or subsequent row of blades, a larger number of blades than that of the row of blades arranged in front.
- Tandem vane grids are generally known and for example in the CH-A-428 071 or shown in DE 39 24 829 C1.
- tandem vane grills can be used in particular in turbo aircraft engines be provided in the compressor or in the turbine to the pressure conditions to be realized with as few steps as possible realize. This leads to a desired weight reduction, however On the other hand, this results in a higher aerodynamic load on the single stage. Especially in the case of a compressor stage, this means that u. a. in the rotor with respect to the relative system or in which subsequent stator with respect to the absolute system a larger one Redirection and / or deceleration of the flow must take place. But this is only possible to a limited extent because the aerodynamic load on the Grid to a detachment of the flow and thus leads to increased pressure losses.
- the grid with the larger number in front of blades is divided unevenly.
- this uneven division can be designed periodically.
- the second has in the flow direction Bucket row twice as many buckets as the first row of buckets, the distance between two blades in the first row of blades equal to the sum of two successive blade spacings in the second row of blades is and the division quotient of the blade spacing in the second row of blades is in the range between 0.4 and 1.0.
- the uneven division can repeat periodically.
- Partial developments of one of two rows of blades 1, 2 are shown in each case existing tandem vane grille of a flow power or work machine.
- the two rows of blades 1, 2 are essentially immediate arranged in a row, d. H. between the two rows of blades 1, 2, which are provided on the rotor, for example, no further row of blades protrudes of the stator, which is the axial component of the flow direction represented by the horizontal arrow 3.
- twice as many blades 21, 22, 23, 24 are provided in the second blade row 2 as in the first blade row 1, of which the blades 11, 13 are shown.
- the arrangement is such that the distance s 1 between the two blades 11, 13 is equal to the sum of two successive blade distances s 12 and s 22 . between the blades 21 and 22 or 22 and 23 of the second row of blades 2.
- the distance s 1 is therefore equal to the distance s 2 , which is the sum of s 12 and s 22 .
- a higher number of blades than in blade row 1 was chosen for blade row 2 in order to reduce the aerodynamic load in second blade row 2.
- a division ratio s / c which is as favorable as possible should thus also be achieved in the second row of blades 2.
- s is generally the distance between two Shoveling a row of shovels refers to the chord length, as usual of the blade profile is designated by c.
- the axial distance between the first blade row 1 and the second blade row 2 are denoted by a *, while h * represents the ordinate pointing in the circumferential direction and indicates how far a blade of the second row of blades 2 is opposite of the assigned blade of the first blade row 1 is offset.
- h * / s for the various is given numerically Blade positions shown in dashed lines in the second blade row 2.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Description
Claims (4)
- Tandem-Schaufelgitter einer Strömungs-Kraft oder Arbeitsmaschine mit zumindest zwei unmittelbar hintereinander angeordneten Schaufelreihen (1, 2) im Rotor oder Stator, wobei das Gitter der zweiten oder folgenden Schaufelreihe (2) eine größere Zahl von Schaufeln (21, 22, 23, 24) als dasjenige der davor angeordneten Schaufelreihe (1) aufweist.
dadurch gekennzeichnet, daß das Gitter mit der größeren Zahl von Schaufeln ungleichmäßig geteilt ist. - Tandem-Schaufel gitter nach Anspruch 1,
dadurch gekennzeichnet, daß die in Strömungsrichtung zweite Schaufelreihe (2) ein ganzzahliges Vielfaches der Schaufeln der ersten Schaufelreihe (1) aufweist und periodisch ungleichmäßig geteilt ist. - Tandem-Schaufelgitter nach Anspruch 2,
dadurch gekennzeichnet, daß die zweite Schaufelreihe (2) doppelt so viele Schaufeln wie die erste Schaufelreihe (1) aufweist. - Tandem-Schaufelgitter nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß der Abstand (s1) zwischen zwei Schaufeln (11, 13) in der ersten Schaufelreihe (1) im wesentlichen gleich der Summe (s2) zweier aufeinander folgender Schaufelabstände (s12, s22) in der zweiten Schaufelreihe (2) ist und daß der Teilungs-Quotient (s12/s22) der Schaufelabstände in der zweiten Schaufelreihe (2) im Bereich zwischen 0,4 und 1,0 liegt.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19525699 | 1995-07-14 | ||
| DE19525699A DE19525699A1 (de) | 1995-07-14 | 1995-07-14 | Tandem-Schaufelgitter |
| PCT/EP1996/003039 WO1997004217A1 (de) | 1995-07-14 | 1996-07-11 | Tandem-schaufelgitter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0839259A1 EP0839259A1 (de) | 1998-05-06 |
| EP0839259B1 true EP0839259B1 (de) | 1999-03-10 |
Family
ID=7766831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96925721A Expired - Lifetime EP0839259B1 (de) | 1995-07-14 | 1996-07-11 | Tandem-schaufelgitter |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5984631A (de) |
| EP (1) | EP0839259B1 (de) |
| CA (1) | CA2226932A1 (de) |
| DE (2) | DE19525699A1 (de) |
| WO (1) | WO1997004217A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1077310A1 (de) | 1999-08-18 | 2001-02-21 | Siemens Aktiengesellschaft | Schaufelgitter |
| EP4286649A1 (de) * | 2022-05-30 | 2023-12-06 | Pratt & Whitney Canada Corp. | Flugzeugtriebwerk mit einer leitschaufelreihe mit schaufeln unterschiedlicher geometrie |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19929978B4 (de) * | 1999-06-30 | 2006-02-09 | Behr Gmbh & Co. Kg | Lüfter mit Axialschaufeln |
| US7238004B2 (en) * | 1999-11-25 | 2007-07-03 | Delta Electronics, Inc. | Serial fan with a plurality of rotor vanes |
| TW529675U (en) | 1999-11-25 | 2003-04-21 | Delta Electronics Inc | Improved fan with movable blade series connected |
| US6439838B1 (en) * | 1999-12-18 | 2002-08-27 | General Electric Company | Periodic stator airfoils |
| DE50110684D1 (de) | 2001-01-02 | 2006-09-21 | Behr Gmbh & Co Kg | Lüfter mit Axialschlaufen |
| US6386830B1 (en) * | 2001-03-13 | 2002-05-14 | The United States Of America As Represented By The Secretary Of The Navy | Quiet and efficient high-pressure fan assembly |
| US6554562B2 (en) | 2001-06-15 | 2003-04-29 | Honeywell International, Inc. | Combustor hot streak alignment for gas turbine engine |
| GB2376723B (en) * | 2001-06-20 | 2004-12-08 | Rolls Royce Plc | Tandem guide vane |
| US6905303B2 (en) * | 2003-06-30 | 2005-06-14 | General Electric Company | Methods and apparatus for assembling gas turbine engines |
| US7097420B2 (en) * | 2004-04-14 | 2006-08-29 | General Electric Company | Methods and apparatus for assembling gas turbine engines |
| US20060018753A1 (en) * | 2004-07-20 | 2006-01-26 | Menian Harry H | High pressure tandem turbine |
| DE102006060694B4 (de) * | 2006-12-18 | 2020-07-09 | Rolls-Royce Deutschland Ltd & Co Kg | Rotor- und Statorschaufel-Anordnung für ein Gasturbinentriebwerk |
| FR2911386B1 (fr) * | 2007-01-16 | 2009-03-06 | Genius Soc Responsabilite Limi | Appareil de conditionnement d'air muni d'un compresseur et d'un vortex |
| FR2961565B1 (fr) * | 2010-06-18 | 2012-09-07 | Snecma | Couplage aerodynamique entre deux rangees annulaires d'aubes fixes dans une turbomachine |
| EP2559852A1 (de) * | 2011-08-19 | 2013-02-20 | Siemens Aktiengesellschaft | Abgasdiffusor und Herstellungsverfahren für Abgasdiffusor |
| KR102073766B1 (ko) * | 2012-11-26 | 2020-02-05 | 보르그워너 인코퍼레이티드 | 배기가스 터보차저의 레이디얼 압축기의 압축기 휠 |
| US9500122B2 (en) | 2013-06-28 | 2016-11-22 | General Electric Company | Variable geometry nozzle and associated method of operation |
| DE202013103528U1 (de) | 2013-08-06 | 2014-11-07 | Siegfried Blaschko | Mehrfachrotoranordnung sowie ein damit angetriebener elektrischer Generator |
| DE102014204346A1 (de) * | 2014-03-10 | 2015-09-10 | Rolls-Royce Deutschland Ltd & Co Kg | Verfahren zur Herstellung eines doppelreihigen Schaufelrads für eine Strömungsmaschine und doppelreihiges Schaufelrad |
| DE102015223212A1 (de) | 2015-11-24 | 2017-05-24 | MTU Aero Engines AG | Verfahren, Verdichter und Strömungsmaschine |
| DE102017221684A1 (de) * | 2017-12-01 | 2019-06-06 | MTU Aero Engines AG | Turbomaschinen-Strömungskanal |
| US11939886B2 (en) | 2022-05-30 | 2024-03-26 | Pratt & Whitney Canada Corp. | Aircraft engine having stator vanes made of different materials |
| US12017782B2 (en) * | 2022-05-30 | 2024-06-25 | Pratt & Whitney Canada Corp. | Aircraft engine with stator having varying pitch |
| BE1030724B1 (fr) * | 2022-07-22 | 2024-02-19 | Safran Aero Boosters | Ensemble pour turbomachine |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2339602A (en) * | 1942-01-26 | 1944-01-18 | B F Sturtevant Co | Multistage propeller fan |
| DE836987C (de) * | 1942-03-21 | 1952-04-17 | Bbc Brown Boveri & Cie | Schaufelanordnung fuer mehrstufige Axialverdichter |
| FR982027A (fr) * | 1943-06-01 | 1951-06-04 | Perfectionnement aux compresseurs axiaux | |
| GB766812A (en) * | 1954-03-04 | 1957-01-23 | Rolls Royce | Improvements relating to multi-stage axial flow compressors |
| US3006603A (en) * | 1954-08-25 | 1961-10-31 | Gen Electric | Turbo-machine blade spacing with modulated pitch |
| DE1280261B (de) * | 1958-10-20 | 1968-10-17 | Gen Dynamics Corp | Spaltschaufeln von nicht laminarem Profil fuer Stroemungsmaschinen mit axialer Durchstroemungsrichtung |
| US3112866A (en) * | 1961-07-05 | 1963-12-03 | Gen Dynamics Corp | Compressor blade structure |
| DK230975A (da) * | 1974-06-04 | 1975-12-01 | Mitsubishi Heavy Ind Ltd | Aksialbleser |
| SE428071B (sv) * | 1980-04-30 | 1983-05-30 | Ellemtel Utvecklings Ab | Kontaktpinne, och elektrisk forbindning i vilken kontaktpinnen ingar |
| US4474534A (en) * | 1982-05-17 | 1984-10-02 | General Dynamics Corp. | Axial flow fan |
| US4859145A (en) * | 1987-10-19 | 1989-08-22 | Sundstrand Corporation | Compressor with supercritical diffuser |
| DE3924829A1 (de) * | 1989-07-27 | 1991-02-07 | Mtu Muenchen Gmbh | Verdichter-oder turbinenlaeufer, insbesondere fuer gasturbinentriebwerke |
| DE4029331C1 (de) * | 1990-09-15 | 1992-01-30 | Mtu Muenchen Gmbh |
-
1995
- 1995-07-14 DE DE19525699A patent/DE19525699A1/de not_active Withdrawn
-
1996
- 1996-07-11 EP EP96925721A patent/EP0839259B1/de not_active Expired - Lifetime
- 1996-07-11 US US08/983,361 patent/US5984631A/en not_active Expired - Fee Related
- 1996-07-11 DE DE59601429T patent/DE59601429D1/de not_active Expired - Fee Related
- 1996-07-11 WO PCT/EP1996/003039 patent/WO1997004217A1/de not_active Ceased
- 1996-07-11 CA CA002226932A patent/CA2226932A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1077310A1 (de) | 1999-08-18 | 2001-02-21 | Siemens Aktiengesellschaft | Schaufelgitter |
| EP4286649A1 (de) * | 2022-05-30 | 2023-12-06 | Pratt & Whitney Canada Corp. | Flugzeugtriebwerk mit einer leitschaufelreihe mit schaufeln unterschiedlicher geometrie |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0839259A1 (de) | 1998-05-06 |
| DE59601429D1 (de) | 1999-04-15 |
| CA2226932A1 (en) | 1997-02-06 |
| DE19525699A1 (de) | 1997-01-16 |
| US5984631A (en) | 1999-11-16 |
| WO1997004217A1 (de) | 1997-02-06 |
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